December 2000 - Zope

REQUEST.set('n', n+1) broken on zope.org
by Richard Jones 04 Dec '00

04 Dec '00

As the subject says, REQUEST.set('n', n+1) is broken on zope.org. The following DTML will raise an AttributeError on __add__: <dtml-call REQUEST.set('n', 1)> <dtml-call REQUEST.set('n', n+1)> Is this a permanent change and is this going into the Zope codebase? Richard -- Richard Jones richard(a)bizarsoftware.com.au Senior Software Developer, Bizar Software www.bizarsoftware.com.au

3 2

Accessing hierarchical information in a CORBA server
by vonWedel＠lfpt.rwth-aachen.de 04 Dec '00

04 Dec '00

Hi folks, I looked into Zope quite recently and I'm very impressed of all its features. After getting started with some basics, I'd like to make a real-world application, migrating from a set of CGI-scripts written in Python but I'm still puzzled how to actually solve my problem, especially using the dtml-tree. I want to access information in a CORBA server which is more or less hierarchically structured, so I'd like to use the neat trees to display the hierarchy and selecting one of the items in the hierarchy directly should open a page with further information about that object. As I have to use CORBA, an external method written in Python seems the only possible way to make a connection from the tree to the server. In the How-To's, I found the following example (http://www.zope.org/Members/anthony/tree-coding-tricks) class _dummy: def __init__(self, name): self.name=name def child_lookup(parent): c = [] for i in range(0,5): c.append(_dummy("%s.%d"%(parent, i))) return c used like this: <dtml-let name="0"> <dtml-tree id=name branches_expr="child_lookup(parent=name)"> <b><dtml-var name></b> </dtml-tree> </dtml-let> This toy example is similar to what I would write, but I need to handle different object types on different levels of the hierarchy. The tree can obviously only handle functions, not real CORBA objects (as the note in the example section in the HowTo suggests...0, right? This means I have to cope with large if-then-else constructs in the function given to branches_expr? CORBA objects are identified by a so-called IOR which is some sort of a stringified object reference but in a non-readable way. Can I use a non-unique 'display name' for each node in the tree and some unique identfier (the IOR) internally? Sorry for so many questions, but I haven't found a lot of info about using the dtml-tree together with external methods. Lars

1 0

Re: [Zope] Help - cannot import zexp
by Dieter Maurer 04 Dec '00

04 Dec '00

Oleg Broytmann writes: > .... functions as default parameters to external method functions > cause import problems .... > .... > "Cannot import default_render from module __main__". Oops! What's that? > The default_render isn't in __main__, sure. I tried to create External > Method before importing, but this didn't help :( This is a severe danger of "pickle" and the external method implementation: * the implementation does not import the Python source files but reads them in and executes them. All functions and classes appear to be defined in the module "__main__". * The implementation places the function default arguments into the ZODB (as a pickle). * "unpickle" cannot load the corresponding object, as it imports "__main__" and looks there for the function -- in vain. As a rule: Avoid the use of class of function definitons from an external method source file for anything that may be written to the ZODB (or more generally be pickled; this applies e.g. to session context, too). This includes created object instances that may end up as attributes of Zope objects or function default parameters to external methods. If you defined such classes or functions in a true Python module, you should have no problem. What can you do, if your zexp is valuable? * put a dummy definition of "default_render" in the "__main__" module. You should then be able to import your zexp and change the problematic external method. I do not know precisely, what Zope's "__main__" module is. I expect the "z2.py". If this is not the case, then a small dummy product that does "import __main__; __main__.default_render= 0" should do the trick, whatever "__main__" may be. Dieter

2 2

again:authenticate and Zope 2.2.4
by Sven Hohage 04 Dec '00

04 Dec '00

I retry my question because it's important for my actual project. It seems to me that the authenticate- method is not working in Zope 2.2.4. Because of security-reasons?? 'Authenticate' can be used to compare the log-in-password with the one saved in the acl-users-folder. But if it's true how should I check if the user knows the Password?? Thanks

1 0

Re: [Zope] IMAP and WorldPilot?
by jornd＠falch.net 04 Dec '00

04 Dec '00

* "Cymen Vig" <cvig(a)raw-io.com> | I'm trying to setup WorldPilot on one server with IMAP running on another. | The documentation for the install says simply: | | "Set your corresponding IMAP and SMTP servers, if they are not on | localhost." | | I went ahead and added a MailHost (SMTP) server but how do I add an IMAP | one? Do I need to digup a product? No, you just need to add the names of your usual IMAP and SMTP-servers to the config. The MailHost is not needed. -- Jørn Helge B. Dahl Falch.net developer - http://falch.net

1 0

Re: [Zope] IP address and US city name
by Hung Jung Lu 04 Dec '00

04 Dec '00

>From: Bill Anderson <bill(a)noreboots.com> >Hung Jung Lu wrote: > > > > Hi, > > > > I know that IP addresses in the USA follow a strict pattern of >geographical > > locations. (Most other countries don't do that.) Does anyone know where >I > > can get a copy of the table of IP addresses vs. city names? > >Whomever told you this was wrong. No Bill. You are the one that is wrong. :) regards, Hung Jung _____________________________________________________________________________________ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com

7 6

dtml methods and properties
by Willem Broekema 04 Dec '00

04 Dec '00

As a DTML method is said to work with the properties of the object it is called at: DTML method "m": <dtml-var bobobase_modification_time> <root folder of site>/m displays the date/time when the last change happened to any file in the root folder <root folder>/m/m displays last change date/time of method m Why does the method not display it's modification time on the first occasion? Or: why does it not give the folder's modification time on the second occasion? - Willem

2 1

Tag attributes...
by Curtis Maloney 04 Dec '00

04 Dec '00

Green things, I've written a handy tag for my Zope site, and it accepts a few attributes. This is all going well, and the tag is working nicely. (Even though I couldn't seem to find any docs on doing this, I just fumbled about with the source from the sendmail tag) However, it seems there is no way to determine if an attribute is a quoted string, or just a variable name, and the only solution is to provide different attributes depending on how this information is passed. Have I missed something, or is there some hidden feature of 'parse_params' that I'm missing? Have a better one, Curtis Maloney.

1 0

confusing access error
by Matthew Wilbert 04 Dec '00

04 Dec '00

I am getting an access error I don't understand at all, which makes me think I have some basic conceptual problem which I hope you can help me get past. I have never used ZopeFind before, so that may be part of it. I have a DTML method that looks like this: <dtml-var standard_html_header> <dtml-in "ZopeFind(this())"> <dtml-with sequence-item> </dtml-with> </dtml-in> <dtml-var standard_html_footer> I actually want to put something in the <dtml-with>, and add some additional parameters to the find, but just trying to execute the method as written I get the following Zope error. Zope Error Zope has encountered an error while publishing this resource. Unauthorized< You are not authorized to access title_or_id. Traceback (innermost last): File C:\PROGRA~1\test\lib\python\ZPublisher\Publish.py, line 222, in publish_module File C:\PROGRA~1\test\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\PROGRA~1\test\lib\python\ZPublisher\Publish.py, line 171, in publish File C:\PROGRA~1\test\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: testit) File C:\PROGRA~1\test\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: testit) File C:\PROGRA~1\test\lib\python\OFS\DTMLMethod.py, line 167, in __call__ (Object: testit) File C:\PROGRA~1\test\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: testit) File C:\PROGRA~1\test\lib\python\DocumentTemplate\DT_In.py, line 691, in renderwob (Object: ZopeFind(this())) File C:\PROGRA~1\test\lib\python\DocumentTemplate\DT_With.py, line 132, in render (Object: sequence-item) File C:\PROGRA~1\test\lib\python\OFS\DTMLMethod.py, line 163, in __call__ (Object: addEventToResource) File C:\PROGRA~1\test\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: addEventToResource) File C:\PROGRA~1\test\lib\python\OFS\DTMLMethod.py, line 163, in __call__ (Object: standard_html_header) File C:\PROGRA~1\test\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: standard_html_header) File C:\PROGRA~1\test\lib\python\OFS\DTMLMethod.py, line 189, in validate (Object: testit) File C:\PROGRA~1\test\lib\python\AccessControl\SecurityManager.py, line 139, in validate File C:\PROGRA~1\test\lib\python\AccessControl\ZopeSecurityPolicy.py, line 209, in validate Unauthorized: (see above) If I replace the <dtml-with sequence-item> with <dtml-with sequence-index> or <dtml-with sequence-key>, I get no error, and if I display them I see the right thing. There is only the root acl_users folder around, and it has only one user set up with manage priv's for pretty much everything. That user can do anything I have tried except run this DTML method. When I try to run the method, I get prompted several times for a username/password--clearly it doesn't want to accept that user's authorization. If anyone could explain why this is happening, and how I can make it stop, that would be very helpful. Thanks very much, Matt Wilbert mwilbert(a)alum.mit.edu ___________________________________________________________________________ Visit http://www.visto.com/info, your free web-based communications center. Visto.com. Life on the Dot.

1 0

Can't load confirm message box
by Angietel 04 Dec '00

04 Dec '00

<body class="body" onload="JavaScript:return confirm()"> <script language="JavaScript"> function confirm(){ window.confirm("Are you sure you want to delete?"); } </script>

1 0